Calcmgrslmember does not return the correct cross reference value , but returns correctly in debug

Summary:

I have a business rule that refers to the calcmgrslmember to retrieve a SL member name and identifies the cross referenced value in an intersection. This does not work as expected

Content (please ensure you mask any confidential information):

FY27->"Percentage Increase"->"BegBalance" = "Factors Growth %"->"No Fund"
->"No University Activity"->"No Cost Center Program"->"No Cost Center"->"No Project"->"No Classification"->"BegBalance"->FY27
->@CalcMgrSLMember("Factors Mapping"->FY27->"BegBalance") ;

this works fine and returns the correct value when I run this in debug mode. But when I run it outside the debug mode, it returns the last SL Member the list and the corresponding cross referenced cell value ..